Dominik Honnef wrote:

> | >>> DIR=x FILE=y.z irb
> | >> s = "$DIR/test/$FILE".gsub(/\$\w+/) {|m| ENV[m[1..-1]]}
> | => "x/test/y.z"
> 
> Thats how I would do it.

Perfect, thanks. I sometimes have a hard time with those efficient 
one-liners. It's all so cryptic.
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